Male Reproductive System Quiz

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Questions and Answers

What is the function of the tunica albuginea in the testes?

Forms the seminiferous tubules

Transports sperm to the epididymis

Provides structural support and protection to the testes (correct)

Produces testosterone

What is the primary function of the ductus deferens (vas deferens)?

To regulate the pH of the semen

To produce seminal fluid

To store and mature spermatozoa

To transport spermatozoa from the epididymis to the ejaculatory duct (correct)

Where are the Leydig cells located?

In the interstitial spaces between seminiferous tubules (correct)

In the tunica albuginea

Within the seminiferous tubules

In the epididymis

Which hormone stimulates the development of spermatogonia?

Follicle-stimulating hormone (FSH) (C) Signup and view all the answers

Which of the following cellular components is NOT present in the epithelium of the ductus deferens?

Cilia (D) Signup and view all the answers

What is the primary function of the seminal vesicles?

Production of fructose-rich seminal fluid (C) Signup and view all the answers

Which of the following is NOT a component of the male genital ducts?

Seminal Vesicles (D) Signup and view all the answers

What is the primary function of the myoid cells that surround seminiferous tubules?

Support and regulate the seminiferous tubules (B) Signup and view all the answers

Which of the following statements is TRUE about the epithelial lining of the seminal vesicles?

It is a pseudostratified columnar epithelium. (D) Signup and view all the answers

What is the function of the mediastinum testis?

Provides a pathway for blood vessels and nerves (A) Signup and view all the answers

What is the characteristic color of semen and what causes it?

Yellow, due to the presence of a lipochrome pigment released by seminal vesicles (A) Signup and view all the answers

What is the arrangement of the smooth muscle layers in the wall of the ductus deferens?

Inner longitudinal, middle circular, outer circular (C) Signup and view all the answers

Which of the following cells are directly involved in the production of sperm cells?

Spermatogonia (B) Signup and view all the answers

Which of the following is NOT a characteristic of the prostate gland?

It has a single, centrally-located lumen. (C) Signup and view all the answers

Which statement accurately describes the relationship between the seminiferous tubules and the epididymis?

Sperm produced in the seminiferous tubules pass through the epididymis for maturation (C) Signup and view all the answers

What is the primary function of the prostate gland?

Production of a milky, slightly acidic fluid (D) Signup and view all the answers

What are prostatic concretions primarily composed of?

Calcified glycoproteins (B) Signup and view all the answers

Which structure is positioned ventrally in the penis?

Corpus spongiosum (A) Signup and view all the answers

What type of epithelium lines the components of the prostate gland?

Simple to pseudostratified to columnar epithelium (D) Signup and view all the answers

Where do the urethral ducts of the prostate gland open?

Into the urethra (C) Signup and view all the answers

Which type of secretion do the bulbourethral (Cowper’s) glands produce?

Thick slippery fluid (D) Signup and view all the answers

Study Notes

Male Reproductive System Histology

The male reproductive system consists of the testes, genital ducts, and associated glands
Testes: Paired oval organs (approximately 4x3x3 cm) located in the scrotum;
Tunica albuginea: Irregular dense connective tissue surrounding each testis
Tunica vasculosa: Highly vascular loose connective tissue immediately deep to the tunica albuginea, forms the vascular capsule
The connective tissue septa of the testes radiate from the mediastinum to subdivide each testis into approximately 250 pyramid-shaped lobules.
Each lobule houses 1–4 blindly ending seminiferous tubules.
Richly vascularized and innervated loose connective tissue surrounds the seminiferous tubules
Interstitial cells of Leydig secrete testosterone.
Seminiferous tubules: Contain spermatogenic cells (spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids); and Sertoli cells
Spermatogonia, Primary Spermatocytes, Secondary Spermatocytes, spermatids, and Sertoli cells are observed in the seminiferous tubule
Extra-testicular genital ducts: Consist of the epididymis, ductus deferens, and ductus ejaculatorius
Epididymis: Highly coiled ductus epididymidis is composed of pseudostratified columnar epithelium surrounded by connective tissue and smooth muscle. Epithelial cells have stereocilia (long microvilli)
Ductus deferens (Vas deferens): Thick-walled muscular tube; has a mucosa of pseudostratified columnar epithelium; with stereocilia; and a lamina propria.
Thick outer wall of smooth muscle (three layers), collagen fibers, and a thin layer of fibroelastic connective tissue.
Accessory genital glands: Paired seminal vesicles, single prostate gland, and paired bulbourethral (Cowper's) glands.
Seminal vesicles: Highly convoluted, tubular structures; located between the bladder and prostate.
Mucosa is lined by a pseudostraitified columnar epithelium (short basal cells and low columnar).
Contain secretions that make up 70% of semen volume, including fructose for spermatozoa energy. Characteristic pale yellow colour due to lipochrome pigments.
Prostate gland: Largest and most numerous glands, forming the bulk of the prostate.
Consist of mucosal, peripheral submucosal and main glands.
Their lumina frequently house round to oval prostatic concretions (corpora amylacea), composed of calcified glycoproteins; numbers increase with age.
Glands are distributed in three zones: central, transition, and peripheral, and ducts open into the urethra. Components are lined with simple to pseudostratified to columnar epithelium surrounded by connective tissue and smooth muscle.
Bulbourethral (Cowper's) glands: Small, paired glands near the base of the penis, just proximal to the beginning of the membranous urethra.
Compound tubuloalveolar glands, whose epithelium varies in structure from simple cuboidal to simple columnar.
Their secretions are a thick, slippery fluid that lubricates the urethra.
Penis: Composed of three erectile tissues enclosed by a tunica albuginea.
Two corpora cavernosa (dorsally), and a corpus spongiosum (ventrally, enclosing the penile portion of urethra).
Tunica albuginea of corpora cavernosa are discontinuous, allowing communication between them.
Corpus spongiosum ends in the glans, pierced by the end of the urethra.

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Description

Test your knowledge of the male reproductive system with this quiz. Covering topics such as the function of the tunica albuginea, ductus deferens, and the roles of Leydig cells, this quiz will challenge your understanding of male reproductive anatomy and physiology. Ideal for students of anatomy or biology.